The herons are the long-legged freshwater and coastal birds in the family Ardeidae, with 64 recognised species, some of which are referred to as egrets or bitterns rather than herons.
An African or Asian animal like a deer, that runs very fast. There are many types of antelope. An antelope is a member of a number of even-toed ungulate species indigenous to various regions in Africa and Eurasia.
An animal with long legs, that eats grass, leaves, etc. and can run fast. Most male deer have antlers (= horns shaped like branches). There are many types of deer.
An insect with long back legs, that can jump very high and that makes a sound with its legs, Grasshoppers are insects of the suborder Caelifera within the order Orthoptera, which includes crickets and their allies in the other suborder Ensifera.